CIO
Q.N gamestudio · 2026 · Adventure, Action-Adventure, Puzzle Platformer, 2.5D, Mystery
PC
Best price
Free
This game is free to play.
About CIO
"CIO" is a side-scrolling action adventure puzzle game. What seems like an ordinary day, darkness silently envelops the campus, You play as a pupil "Z", using your wisdom and bravery to solve every puzzle, activate every mechanism, defeat every enemy, and ultimately break free from the dark shroud！